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How to combine multiple conditions to subset a data-frame using “OR”?
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my.data.frame <- subset(data , V1 > 2 | V2 < 4)
An alternative solution that mimics the behavior of this function and would be more appropriate for inclusion within a function body:
new.data <- data[ which( data$V1 > 2 | data$V2 < 4) , ]
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Get last dirname/filename in a file path argument in Bash
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answered Jul 20 '10 at 20:29
sthsth
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Reference: Comparing PHP's print and echo
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How can I use if/else in a dictionary comprehension?
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edited Mar 22 at 16:40
Peter Mortensen
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How to split a file into equal parts, without breaking individual lines? [duplicate]
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145
If you mean an equal number of lines, split has an option for this:
split --lines=75
If you...
How to smooth a curve in the right way?
...ort numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0,2*np.pi,100)
y = np.sin(x) + np.random.random(100) * 0.2
yhat = savitzky_golay(y, 51, 3) # window size 51, polynomial order 3
plt.plot(x,y)
plt.plot(x,yhat, color='red')
plt.show()
UPDATE: It has come to my attention that the co...
How do you round a number to two decimal places in C#?
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Calculating arithmetic mean (one type of average) in Python
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Maven dependency for Servlet 3.0 API?
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